【单选题】
经过点(0,-3)和点(-2,0)的直线的斜率为( )
①
<img class="kfformula" src="20190809/1565321660113443.png" data-latex="\frac {2} {3}"/>
②
<img class="kfformula" src="20190809/1565321660704793.png" data-latex="\frac {3} {2}"/>
③
<img class="kfformula" src="20190809/1565321660224474.png" data-latex="-\frac {3} {2}"/>
④
<img class="kfformula" src="20190809/1565321660377728.png" data-latex="-\frac {2} {3}"/>
【单选题】
经过点(0,-3)和点(-2,0)的直线的斜率为( )
①
img class=kfformula src=zzximg/20190809/1565321660113443.png data-latex=\frac {2} {3}/
②
img class=kfformula src=zzximg/20190809/1565321660704793.png data-latex=\frac {3} {2}/
③
img class=kfformula src=zzximg/20190809/1565321660224474.png data-latex=-\frac {3} {2}/
④
img class=kfformula src=zzximg/20190809/1565321660377728.png data-latex=-\frac {2} {3}/
【单选题】
已知点M(1,-2)、N(3,-1)和直线x+2y-1=0,则( )
【简答题】
曲线Y=x2-x在点(1,0)处的切线斜率为[填空]
【单选题】
直线l经过点A(1,2),在x轴上的截距的取值范围是(-3,3),则其斜率的取值范围是( )
【单选题】
已知点M(2,-1)、N(1,4)和直线 x+2y-1=0,则( )
【单选题】
已知点A(20,0,0)和点B(20,0,10),关于点A和点B的相对位置,哪一种判断是正确的? ( )
【单选题】
点(a,b)关于直线x+y+1=0的对称点是( )
【单选题】
已知三点A(10、20、15)、B(10、0、30)、C(0、10、0),则在坐标面上的点为______。
①
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A、B、C三点
②
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B点
③
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B、C两点
④
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C点
【单选题】
过点(2,0)且与直线<img class=jc-formula data-tex=y=\frac { 1 }{ x } src=https://huaweicloudobs.ahjxjy.cn/0D8F356CCA61A2D9F9454B228CA2C60F.png style=vertical-align: middle;/>相切的直线方程为( )
①
<img class=jc-formula data-tex=y=-\frac { x-2 }{ 4 } src=https://huaweicloudobs.ahjxjy.cn/3A4E5D921C7CBC02D1146DE44427DEFC.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=y-1=-(x-1) src=https://huaweicloudobs.ahjxjy.cn/8E8CFA9D156735224222F8247C0C87C3.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=y=4(x-2) src=https://huaweicloudobs.ahjxjy.cn/6A504CAC52CB66E8F503EF49B2651A24.png style=vertical-align: middle;/>